tinu.heiniger1 year ago000Where do I fill this in for a K4 Power Control?Show in original language (German)MichaelA6881 year ago • purchased this product011purchased this productNot at all.According to the operating instructions:"For operation with cleaning agents, a Plug 'n'Clean detergent bottle is required. KÄRCHERcleaning agents can be purchased ready to use in a Plug'n' Clean detergent bottle ready for use."Show in original language (German)Comment